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Solid-state self-inclusion complexation behaviour of a pillar[5]arene-based host–guest conjugate

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Abstract

A host–guest conjugate consisting of a pillar[5]arene and an ethylene moiety containing a triazole group at one end and a perfluorooctyl group at the other end was synthesized. The host–guest conjugate displayed unusual real-time scale solid-state self-inclusion complexation behaviour. The host–guest conjugate formed a de-threaded supramolecular structure only in solution, even at high concentrations. However, heating the solid-state host–guest conjugate led to the formation of a self-inclusion complex structure at a real-time scale; at 100 °C, it took ca. 20 h to form the self-inclusion complex at the equilibrium state at a conversion of 85%. The self-inclusion complex converted to the de-threaded form at a real-time scale when it was stored in solvents with small molecules, which worked as competitive guests.

Graphical abstract: Solid-state self-inclusion complexation behaviour of a pillar[5]arene-based host–guest conjugate

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Publication details

The article was received on 03 Dec 2017, accepted on 24 Jan 2018 and first published on 24 Jan 2018


Article type: Research Article
DOI: 10.1039/C7QM00553A
Citation: Mater. Chem. Front., 2018, Advance Article
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    Solid-state self-inclusion complexation behaviour of a pillar[5]arene-based host–guest conjugate

    T. Ogoshi, T. Furuta, Y. Hamada, T. Kakuta and T. Yamagishi, Mater. Chem. Front., 2018, Advance Article , DOI: 10.1039/C7QM00553A

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